This looks like it could be fun for kids. Watch the video on ThinkGeek to see it in action.

How fun is this? A science nerd at heart, I would love to have this to build. This is a great gift for kids, too, who love to build things. It is a challenge to build, however. It doesn't come with step by step instructions, just how the girders connect, how to build the tanks, and some pictures of the completed product. Once you've figured it out (it gets built from the bottom up), add some water and some food coloring for added effect and impress yourself and your friends. I love science.

As a certified and card-carrying Nerd stuff that uses physics and makes things go and doesn't really do much important is SOOO cool to me. This makes me want to make a Science Fair Project again... or maybe as a cool watering device for my cat's dish?

The instruction manual shows you how the girders connect, how to build the various tanks, and some rendered images of completed projects - but not step-by-step. Your entire model gets built up from the bottom of the carrying case, which acts as the water reservoir and also has a special footing to be the structure's foundation. Level by level, you build your support frame and add your tanks. Then connect all the tubes, add in the valves, and turn on the electric pump. If you've done it right, you'll have an awesome construction everyone will marvel at (a little food coloring helps). Fail and you're all wet - quite probably literally. (via ThingGeek)